Paper-feed mechanism



Sept. 4, 1923.

L. R. BARBER PAPER FEED MECHANISM Filed May 27, 1922 IN V EN TOR. A .wzer

Patented Sept. 4, 1923.

PTEN OFFECE.

LEWIS R. BARBER, 0F FRESNO, CALIFORNIA. ASSIGNOB .TO LISENBY MANUFACTURING COMPANY, OF FRESNO, CALIFORNIA, A CORPORATION.

PAPER-FEED Application filed May 27,

To all whom it may concern:

Be it known that I, LEWIS R. BARBER, a citizen of the United States, residing at Fresno, county of Fresno, State of California, have invented certain new and useful Improvements in Paper-Feed Mechanism; and I do declare the followingto be afulLclear, and exact description of the same, reference being had to the accompanying drawings, and to the characters of reference marked thereon. which form a part of this application.

This invention relates to improvements in printing presses, and particularly to the paper feed mechanism thereof, the type of press in which thismechanism is incorpo rated being that. shown in United States Patents No. 1016756, February 6th,-1912; and No, 1041314. October 15th, 1912, my feeding mechanism being incorporated with the adiustable bail structure as shown in latent No. 1,413,842.dated'Anril 25th, 1922.

In this device, the paper is fed between the feed-rollers of the'bail. one of which rollers is movable vertically-with respect to the other. and is then' stopped from advancementby means' of. fingers which are raised out of the way when the rollers come together to feed the paper forward at a pre determined period in the cycle of operation of the press.

If these fingers are lifted too soon. the paper is apt to slide forward before it should. or become crooked; in either case destroying the register of the sheet of paper with the matter to be printed thereon. Or the fingers may move out ofthe way too late. after the rollers have come together, thus causing the paper to be crumpled.

The principal obiect of my invention therefore isto provide a means whereby the fingers will be released or raised from the paper at the precise instance necessary for perfect cooperation with the feed rollers.

Another object is to provide for adjustment of said means, so that the time of actuation of the fingers, and theextentof their movement, may be regulated to a nicety.

- I have also provided a novel form of adjustable spring means for insuring'rapid and positive movement'of'the bail.

A further object of the invention is to produce a simple and inexpensive device, and yet one which will be exceedingly effective for the purposes for which it is designed.

MECHANISM.

1922. Serial No. 564,141.

These objects I accomplish by means of such structure and relative arrangement of parts as will fully appear by a perusal of the following specification and claims.

In the drawings similar characters of reference indicate corresponding parts in the several views.

Fig. 1 is a top plan view of the bail and feed mechanism, showing my improved finger-control means, and the spring bail-control means.

Fig. 2 is a cross section taken on the line 2-2 of Fig. 1, showing the fingers depressed or in their normal position.

Fig. 3 is a similar view ofth'e bail detached, showing the fingers raised.

Referring now more particularly to the characters of reference on the drawings, the

numeral 1 denotes the side frames of the i press, on which are fixed the dolly-boxes 2 of the feeding mechanism, andbetween and in which isjournaled the printing cylinder 3. carrying a driving gear 4 on one end, meshing with a rack 5 on the moving bed of the press.

Forward of the cylinder 3, and on the side thereof opposite the gear-4 is'the bail post 6, carrying on its lower and'forward end the bail-post feeler-roller 7 This bail post'is adjustably connected to'the horizontal bar 8 of the bail. in the manner shown in the above mentioned Patent No. 1,413,842, the bail post and bail for the purpose of this case being considered. as a single unit.

This structure is pivoted to and between the boxes 2 at the end nearest the cylinder by hearing pins 9,the one on the side adjacent the gear Shaving a pinion 10 meshing therewith andwith-a gear 11 provided with the bail feed-rolls 12, which are spaced apart, and which are journaledby means of a shaft 13 in the bail forward of the pins 9.

In vertical alinement with ,the' rolls 12 are the lower paper-feed rolls 14, iournaled in the posts 2 undertherolls 12, and normallv spaced therefrom.

Above the lower rolls 14 is the paper feedplate 15, said rolls projecting therethrough sli htly.

To the rearof said rolls and therebetween the plate 15 is provided with slots 16 to receive the ends of stop-fingers 17 formed with a horizontal bar 18 pivotally mounted t and between the boxes 2ahead of the bail, spring means 19 being arranged with the bar 18 tonormally cause the fingers to project through the slots. Movement of the lingers in this direction is stopped and the extent of projection adjusted by means of an eccentric roller 20 journaled in one of the boxes 2 and bearing against the bar 18.

Projecting outwardly Or forward from the bar 18 is a rigid plate 21 adapted to be engaged by an arm or finger 22 mounted on the bail-bar 8 for limited rocking movement as shown'at 23.

Vertical adjustment of this arm is had by means of two screws 24: and 25 to the rear of the rocking connection 23, the screw 24 being threaded into the arm and bearing on the bar 8, while the screw 25 passes freely through the said arm and is threaded into the bar 8. By this means, the vertical spacing of the outer end of the arm from the plate 21 may be adjusted to suit, while the normal setting of the fingers may be regulated by turning the roller 20.

The roller '7 normally rides on a track 26 on the moving-bed of the press, which at a certain point has a drop as at 27 to allow the roller 7 to drop. 1

Normally, when the roller 7 is raised, the fingers 17 are projected into the slots 16 so as to form a stop for any paper fed onto the plate 15, while the feed rolls 12 and 14 are separated. I

\Vhen the roller 7 reaches the drop in I the track, the bail moves'down and forwardly about the pivotal pins 9, causing the rolls 12 and 14 to gradually approach each other. At the same time the arm 22 is approaching the plate 21, until just at the time the feed rolls come together to frictionally engage and feed the paper therebetween, the, arm22 strikes and de presses the plate 21, causing the fingers 17 to be raised free of' the slots 16 just in time to allow the paper to be fed freely between the fingers and feed plate; 1

The bail is positively caused-to be moved forward by means of a rod 28 slidably mounted in a bearing 29, adjacent the bail 8, said bearing being formed with a block 30 fixed to one ofthe bones 2. The rod 28', in reduced size, passes freely through an adjustment screw 31, threaded into a bearing 29 on the block 30 opposite the bearing 29, while a helical'spring 32 is about the rod 28 between the adjacent end of the screw and the termination ofthe enlarged portion of the rod 28, both of which are between the bearings 29' and 29*.

By means of this construction, the rod is free to slide, and has a pair of spaced bearings, to give a substantial mounting, while at the same time the tension of the spring, and hence the pressure on the rod, may be adjusted at any time.

From the foregoing description it will be readily seen that I have produced such a device as substantially fulfills the objects of the invention as set forth herein.

While this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claims.

Having thus described my invention, what I claim as new and useful and desire to sesure by Letters Patent, is:

1. In a printing press, a pivoted bail, upper feed-rolls pivoted therein, lower feed rolls pivoted independently of the bail and normally spaced from the upper rolls, a paper-feed plate fixed with respect to the lower rolls, a transverse bar structure pivoted independently of the bail, fingers mounted on the bar and normally projecting below the surface of the plate, means for tilting the bail to cause the upper rolls to contact with the lower rolls, and a member mounted on the bail and adapted to engage the bar at a point thereon such that a depression of said bar at that point will cause the fingers to be raised, said member being normally vertically spaced from the bar, and means for enabling said normal spacing oflsiaid member from the bar to be altered at wi 2. In a printing press, a pivoted bail, upper feed-rolls pivoted therein, lower feed rolls pivoted independently of the bail, and normally spaced from the upper rolls, a paper-feed plate cooperating with the lower rolls and fixed with respect thereto, fingers pivoted independently of the bail and normally projecting below the surface of the plate, means for tilting the bail about its pivotal connections to cause the upper feed rolls to contact with the lower rolls, and means carried by the bail and acting on the fingers after the bail has started to tilt and to raise the same above the plate by the time the rolls contact;

3. In a printing press, a pivoted bail, uplper feed-rolls pivoted therein, lower feed rolls pivoted independently" of the bail, normally spaced from the upper rolls, a

paper-feed plate co-operati-ng with the lower rolls and fixed with respect thereto, fingers pivoted independently of the bail and normally projecting below the surface of the plate, means for tilting the bail about its pivotal connections to cause the-upper feed rolls to contact with the lower rolls, means carried by the bail and movable therewith for raising the fingers above the feed plate,

and means whereby such raising of the angers may be adjustably timed with respect tothe contacting of the rolls;

1. In a printing press, a pivoted bail, a block having spaced bearings fixed with'respect thereto, a screw threaded into the bear ing farthest from the bail, a rod slidable through the other bearing and through the screw and contacting with the bail, an enlarged portion on the rod and spring means between the inner end of the screw and the enlarged portion of the rod and forcing the rod into contact with the bail at all times, the screw being adjustable, whereby the tension of the spring and the resultant pressure of the rod against the bail may be Varied at will.

5. In a printing press, a pivoted bail, a block fixed with respect to the bail and having spaced and alined bearings whose axis are at right angles to but oflset from the axis of the bail, a screw adjustably threaded into the bearing farthest from the bail, a rod slidable through the other bearing and through the screw whereby the entire length of the latter serves as a bearing for the rod, and enlarged portion on the rod, and spring means on the rod between the inner end of the screw and the enlarged portion of the rod and acting to hold the latter in contact.

with the bail.

In testimony whereof I affix my signature.

LEWIS R. BARBER. 

